Hi there, just wondering if you ever figured out what this issue was. I have the same problem, at low speeds when I'm going up or down my parking garage at work when I turn left or right I get a whining/grinding noise.

if it were the power steering I would think the issue would be repeatable when I turn the wheels full lock left or right since the pump is working its hardest then. but i have to be moving at low speed to hear it, and it also doesn't appear at high speeds (which I assume the road noise is just drowning it out)

I wondered if it were the diff or the wheel bearings/hubs.

jeff

If it is while making tight turns, then you need the differential fluid replaced with the special fluid that contains friction modifier for the differential clutches. Part number is 83 22 2 282 583.